Wollensak 是一個美國品牌，也是光學大廠，出品的鏡頭超便宜，而且那個較果也不差，最少在線性方便是交足功課。 不過c mount的鏡頭也因為平價，不太多見就是了。 The Wollensak Optical Company was established in 1899, in Rochester, NY. In the early 20th century, Rochester was the center of the American op...